In Mexico, not only did a sugar-sweetened beverage tax work, it appears to be working more as time goes on

I have written before about soda bans, and why I think they're somewhat misguided. There were loopholes to get around them, they arbitrarily focused on some size beverages, and they were somewhat haphazardly enforced. But I left myself open to the idea of a soda tax - which seems less forceful - and a number of governments have attempted them.

In last month's Health Affairs, researchers report on the effects of a sugar-sweetened beverage tax that had been in place for two years. Mexico implemented the 1 peso per liter excise tax in the beginning of 2014. This was in response to their own obesity epidemic, where about 70% of adults and 30% of children were overweight or obese by 2012.